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Anodizing method for aluminum alloy by using high-frequency switching electrolysis
Technical Paper
2011-32-0645
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Anodizing is applied to improve the durability and the corrosion resistance of aluminum alloy parts of engines and car bodies. Generally, anodic oxide film is formed using direct current anodizing (DCA). However, in the case of anodizing high silicon aluminum alloy cast parts, it is difficult to derive uniform film thickness distribution. Furthermore, it takes a long treatment time which causes low productivity. In this study, the authors have developed an anodizing method by using high-frequency switching anodizing (HSA) to solve these problems. The growth process of anodic oxide film is susceptible to the metallographic structure. Thus, the typical DCA application to the high silicon aluminum alloy produces a non-uniform film thickness, while HSA has the potential to form uniform film without being affected by metallographic structure. Moreover, the current density of HSA is higher than that of DCA which reduces treatment time to 1/5 as the film formation enhances. Our investigation is to apply HSA to the mass produced engine pistons that require both high durability and low cost.
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Citation
Tanaka, H., Fujita, M., Yamamoto, T., Muramatsu, H. et al., "Anodizing method for aluminum alloy by using high-frequency switching electrolysis," SAE Technical Paper 2011-32-0645, 2011.Also In
References
- Kunioka, S. Yamauchi, T. Yamamoto, T. Ito, Y. Hirai, K. Kawai, Y. SUZUKI TECHNICAL REVIEW 32 2006 81
- Yamamoto, T. Tanaka, H. JP4075918 2008
- Yamamoto, T. Tanaka, H. Fujita, M. Asoh, H. Ono, S. J. Japan Inst. Light Metals 60 2010 602
- Fujita, M. Tanaka, H. Muramatsu, H. Yamamoto, T. Asoh, H. Ono, S. The Surface Finishing Society of Japan 62 2011 346
- Keller, F. Hunter, M.S. Robinson, D.L. J. Electrochem. Soc. 100 1953 411
- Ono, S. The Surface Finishing Society of Japan 58 2007 342
- Saito, M. Shiga, Y. Miyagi, M. Wada, K. Ono, S. J. Appl. Phys. 34 1995 3134
- Ono, S. Ichinose, H. Masuko, N. J. Electrochem. Soc. 138 1991 3705
- Ono, S. Sato, T. The Surface Finishing Society of Japan 32 1981 184
- Ono, S. Chiaki, S. Sato, T. The Surface Finishing Society of Japan 26 1975 456
- Mizumoto, S. Nawahune, H. Kawasaki, M. Aluminum Finishing Society of Kinki 133 1988 14
- Yamamoto, T. Society of Automotive Engineers of Japan 63 2009 75